| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a novel copolymerized polyester resin composition having the excellent mechanical characteristics and size stability with respect to temperature and humidity, capable of obtaining a molded product with a preferable light resistance. Ž<P>SOLUTION: The copolymerized polyester resin composition is made of a 2-4C alkylene glycol, and an aromatic dicarboxylic acid component represented by formulae (I): HO(O)C-R<SP>2</SP>-OR<SP>1</SP>O-R<SP>2</SP>-C(O)OH, wherein R<SP>1</SP>is a 2-10C alkylene group and R<SP>2</SP>is a 2,6-naphthalenediyl group, and (II): HO(O)C-R<SP>3</SP>-C(O)OH, wherein R<SP>3</SP>is a phenylene group or a naphthalenediyl group. 0.5-5.0 mass%, based on the resin composition mass, of a cyclic iminoester ultraviolet absorber is included in a copolymerized polyester with the copolymerization rate of the aromatic dicarboxylic acid component represented by formula (I) being at least 5 mol% and less than 50 mol% based on the total acid component. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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